2001 1500hd rear axle

01hd · 07-07-2007, 08:37 AM

does anyone know what my 2001 1500hd rear end is? I assume its a corp. 14 bolt but is it a semi floating or full floating? the build sheet says it has 373 gears and lsd but thats it. thanks for all the help

mrjohnwayne · 07-07-2007, 08:21 PM

14 bolts are full float.

75K30 · 07-08-2007, 02:06 PM

Not all 14 bolts.
There was a semi float 9 1/2" ring gear 14 bolt.
Here are pics of both.

Oh yeah, there are three different GM axles with 14 bolts holding the inspection cover.
The 9.5"
The 10.5"
the 11.5"

01hd · 07-09-2007, 05:36 AM

So from the feed back that i got i am to assume that my rear end is a full floater. like i said before its a 2001 crewcab 1500hd 4x4 with eight lugs.

75K30 · 07-09-2007, 09:04 AM

That 1500 HD confuses me. I am not too sure how much it has in common with the 2500. The frames are diferent, and the GVWR is lower, I think around 8K lbs, where an equally equiped 2500 is over 9k lbs with the same gear ratio. The frames are different for sure, and oddly enough they do not share the same spring rates.
I have seen some say semi float for the 1500 HD, and other data that indicates full float. I am leaning towards full float.
Look at the center of the axle, and if it has bolts that can be removed for access to the axle then it is a full floater.
There is also axle id numbers all over that truck that will help you determine which axle you have.

07-07-2007, 08:37 AM	#1
01hd Full Member Join Date: Feb 2007 Posts: 17	2001 1500hd rear axle does anyone know what my 2001 1500hd rear end is? I assume its a corp. 14 bolt but is it a semi floating or full floating? the build sheet says it has 373 gears and lsd but thats it. thanks for all the help

07-07-2007, 08:21 PM	#2
mrjohnwayne Moderator Join Date: Apr 2005 Location: Texas Posts: 3,101	14 bolts are full float. __________________ John Wayne 2000 F-350 7.3L Powerstroke 4x4

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07-09-2007, 05:36 AM	#4
01hd Full Member Join Date: Feb 2007 Posts: 17	So from the feed back that i got i am to assume that my rear end is a full floater. like i said before its a 2001 crewcab 1500hd 4x4 with eight lugs.

07-09-2007, 09:04 AM	#5
75K30 Senior Member Join Date: Jul 2006 Posts: 2,507	That 1500 HD confuses me. I am not too sure how much it has in common with the 2500. The frames are diferent, and the GVWR is lower, I think around 8K lbs, where an equally equiped 2500 is over 9k lbs with the same gear ratio. The frames are different for sure, and oddly enough they do not share the same spring rates. I have seen some say semi float for the 1500 HD, and other data that indicates full float. I am leaning towards full float. Look at the center of the axle, and if it has bolts that can be removed for access to the axle then it is a full floater. There is also axle id numbers all over that truck that will help you determine which axle you have.